I got some bad news... with further reading, while CDF was a good choice to kill, it might have been a bad idea to kill ACIN...

Yad-Thaddag

Yad-Thaddag is possibly the Elder God equivalent of the Outer God Yog-Sothoth. This being has the same appearance as Yog-Sothoth, except its spheres are of a different colour and its nature is purely benevolent. It appears in Lumley's 1989 novel Elysia.